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How does one calculate the area needed on the wires for a given driver? Easiest cable for me to use would be cat6 cable I have but it is only 0.25mm2 area. How much current can I run in a wire (typically 35ish V)? I guess I can run multiple wires for more current.

  They might be overkill but it was actually the least expensive option for me. Even with the low amperage I will be using I don't think I can run them passive but at least they give me room to grow :)   Not so sure I liked the options on the 2530s though. Made it much harder to decide for me...

  Thanks! One stop shopping :)

I lucked out. A local store had the 70W versions of the Arctic for sale so ordered 10 at around $60 shipping included.   Have had a really hard time deciding how to build the rest of the system though but then I found out about http://pct.cree.com/dt/index.html   Had a bit of an epiphany and...

An option for heat sinks would be a CPU-cooler with fan. Is there a resource somewhere where one can see what size/type CPU-cooler can be used for a particular LED? I know the cheap coolers/fans are risky (fan failure) but replacing failing LEDs, if the fan fails, is not that expensive compared...

  Thanks for the info! Will the heat sinks from fastech really be enough for the cxa2530s? I figure I would drive them with higher amps as well (around 600mA?). I could of course drive them with the 300mA driver but that seems like a waste of their potential. Seems like heat sinks and...

Going to grow peppers and probably tomatoes indoors all season in a 4x4 tent. Mainly I want to experiment with different hydro systems just for fun.   A bit torn on lights but very much leaning towards a DIY LED system atm.   Looking at the mammoth in this thread but I guess I will probably need...

I have run a 6 plant system ebb&flow and the same system modified for NFT in a greenhouse. Will continue to use NFT as it is so simple and no effort what so ever. I ignore PH and exact numbers for EC. I'm sure that if I could be bothered doing anything but dosing the approximate amount of nutes...

Thanks for advice. My system will basically be a big balcony box fastened to the rail on my patio deck so I don't have the luxury of creating an enclosure. This is also why I'm going for ornamentals as that is the main focus. Never having used a green house or anything like that I must confess...

Ouch, those are numbers I did not want to see. That gives me June-Aug for night time temps of 10 or better (average). Peak night time averages in July/Aug is 12 .... Is three months enough to get a harvest provided the plants are started indoors? While I will not plant in soil I will have a...

Bah, now you made me all confused again :) Mid May is what I consider early summer here. While we do not have warm summers we usually have fairly mild winters (my area is considered zone 7). So, do I have to wait for temps to come up or do I just need to be guaranteed to have no frost? If the...

Thanks! That was the impression I got from other posts but it was never cleary stated. I doubt the water temperature will be a problem as it never gets all that warm here. While we certanly do have weeks with higher temp the average high here is 68F/20C. I might want to put the "tank" in the...

This will be my first season growing chilis, or anything for that matter. I have an aerogarden with chili seeds that is now two months old and got bit by a bug to grow more. I'm trying to read up on as much as I can I have a couple of questions on a few things that are not clear to me. I will...

I got an aerogarden with the chili seeds which has now gotten me bitten by the chili growing bug. Does anyone know what the chilis are that come with that seed kit? They use their own names for them. Mine is just about to flower so I don't have any pics with pods on them to help with ID. Just...